<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    {%if(false){%} 
        hello
    {%}else{%}
        world
    {%}%}
    {%arr.forEach(item=>{%}
        <li>123</li>
    {%})%}
</body>
</html>